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3750 Metro hardware defection.

When two 3750ME ,same IOS and same configuration, connected using fastethernet trunk, vlan interface over the trunk can't building ospf neighbor,one can recieve the ospf hello ,the other can't.We have 22 3750ME running in our network, several sites have met the same problem.

Futhermore ,when 3750 Metro connect with a 7507 router using a fast ethernet trunk, the 7507 interface configured dot1q,then the 3750ME interface lost packets.

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Re: 3750 Metro hardware defection.

Take care when setting the mode to on (manual configuration) in etherchannel PAgP modes. All ports configured in the on mode are bundled in the same group and are forced to have similar characteristics. If the group is misconfigured, packet loss or spanning-tree loops might occur.

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